101 lines
2.8 KiB
C#
101 lines
2.8 KiB
C#
using Microsoft.EntityFrameworkCore;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using RIZO.Server.IService;
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using RIZO.Server.IEFContext;
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namespace RIZO.Server.Service
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{
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public class ServiceBase : IServiceBase
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{
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protected DbContext Context { get; private set; }
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public ServiceBase(RIZO.Server.IEFContext.IEFContext eFContext)
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{
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Context = eFContext.CreateDBContext();
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}
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public void Commit()
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{
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this.Context.SaveChanges();
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}
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public void Delete<T>(int Id) where T : class
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{
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T t = this.Find<T>(Id);//也可以附加
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if (t == null) throw new Exception("t is null");
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this.Context.Set<T>().Remove(t);
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this.Commit();
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}
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public void Delete<T>(T t) where T : class
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{
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if (t == null) throw new Exception("t is null");
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this.Context.Set<T>().Attach(t);
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this.Context.Set<T>().Remove(t);
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this.Commit();
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}
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public void Delete<T>(IEnumerable<T> tList) where T : class
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{
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foreach (var t in tList)
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{
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this.Context.Set<T>().Attach(t);
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}
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this.Context.Set<T>().RemoveRange(tList);
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this.Commit();
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}
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public T Find<T>(int id) where T : class
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{
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return this.Context.Set<T>().Find(id);
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}
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public T Insert<T>(T t) where T : class
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{
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this.Context.Set<T>().Add(t);
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this.Commit();
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return t;
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}
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public IEnumerable<T> Insert<T>(IEnumerable<T> tList) where T : class
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{
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this.Context.Set<T>().AddRange(tList);
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this.Commit();//写在这里 就不需要单独commit 不写就需要
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return tList;
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}
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public IQueryable<T> Query<T>(Expression<Func<T, bool>> funcWhere) where T : class
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{
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return this.Context.Set<T>().Where<T>(funcWhere);
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}
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public void Update<T>(T t) where T : class
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{
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if (t == null) throw new Exception("t is null");
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this.Context.Set<T>().Attach(t);//将数据附加到上下文，支持实体修改和新实体，重置为UnChanged
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this.Context.Entry<T>(t).State = EntityState.Modified;
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this.Commit();
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}
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public void Update<T>(IEnumerable<T> tList) where T : class
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{
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foreach (var t in tList)
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{
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this.Context.Set<T>().Attach(t);
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this.Context.Entry<T>(t).State = EntityState.Modified;
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}
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this.Commit();
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}
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public virtual void Dispose()
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{
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if (this.Context != null)
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{
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this.Context.Dispose();
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}
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}
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}
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}
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